@@ -107,6 +107,13 @@ int avfilter_link(AVFilterContext *src, unsigned srcpad,

         src->outputs[srcpad]        || dst->inputs[dstpad])

         return -1;

+    if (src->output_pads[srcpad].type != dst->input_pads[dstpad].type) {

+        av_log(src, AV_LOG_ERROR,

+               "Media type mismatch between the '%s' filter output pad %d and the '%s' filter input pad %d\n",

+               src->name, srcpad, dst->name, dstpad);

+        return AVERROR(EINVAL);

+    }

+

     src->outputs[srcpad] =

     dst-> inputs[dstpad] = link = av_mallocz(sizeof(AVFilterLink));